Bobbin release for loom weft-replenishing mechanism



Dec. 7 1926. A. A. GORDON BOBBIN RELEASE FOR LOOM WEFT REPLENISHING MECHANISM beets-Sheet l Filed June Dec. 7 1926.

A. A. GORDON BOBBIN RELEASE FOR LOOM WEFT REPLENISHING MECHANISM m W G W 1 A v Filed June, 13, 1925 Patented Dec. 7, 19 26 UNITED; STATES ALBERT A. GORDON, OF WORCESTER, MASSACHUSETTS, ASSIGNOB, TO CROMIPTON &

"PATENT OFFICE.

KNOWLES LOOM ,WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS. V I

BOBBIN RELEASE FOR LOOM WEET-REPLENISHING MECHANISM.

. Application filed June 13, 1925. Serial No. 36,980.

This invention relates to loom weft replenishing mechanism of the multi-color type and it is the principal object ofthe invention to provide means for releasing a bobbin which has moved to transfer position but has not been transferred because of improper boxing of the shuttle.

In multi-color weft replenishing mechanisms the bobbins of differing colors are arranged in parallel Vertical stacks and at indication of weft exhaustion a bobbin of the proper color is released to move toward transfer position; hen the indicatlng shuttle returns to theimagazine side of the loom the transfer will take place provided the shuttle is properly boxed, but if the shuttle should fail to be in position to receive the bobbin, the replenishing mechanism is reset but the bobbin which was to have been transferred is still in transferring position and must be removed. Heretofore devices have been provided for releasing an untransferred bobbin but they have been made to operate either by. regularly actuated mechanism subject ,to undue wear or' they have been operated only, when'needed but on the forward stroke of the lay. In the latter-construction the bobbins'are occasion ally caught between the lay and some stationary part of the 'loom with resultant breakage and in the former devices the wear of the parts is excessive. It is a further object of my invention toprovide a bobbin release operative only at the time of a revoked transfer to release an untransferred bobbin on the backward stroke of the lay.

With these and other objects in view which will appear as the description proceeds my invention resides in the combinatlon and arrangement of parts hereinafter described and set forthin the claims.

In the accompanying drawings wherein I have shown one embodiment of my mvention i Fig. 1 is a vertical central section through the lower portion of a multi-color weft replenishing mechanism looking toward the loom and showing the bobbin support 111 normal open position,

Fig. 2 is a horizontal section on line 22 of Fig. 1.

Fig. 3 is a fragmentary View showing certain parts of the invention in the position they assume when a transfer is about to take place,

Fig. 4 is a View similar to Fig. 1 but show ing the parts in the position they assume after a transfer has been'revoked and before resetting of the bobbin support to normal open position,

Fig. 5 is a detail view showing the retaining lever, and

Fig. 6 is a detail of the unlocking lever which controls the lever shown in Fig. 5.

In the drawings wherein I have shown 3 rods 16 of the replenishing mechanism. The

support 13 has a rearwardlyand upwardly extending arm 17 through which extends a pin 18 movable in a slot 19 formed in link 20 and engaging screw 21 secured in said link. The link 20 is movable about a fixed pivot 22 and the screw 21 is adjustable to vary the position of the support 13. A tension spring 23 is interposed between the arm 17 and an offset in the upper end of link 15 and servesto hold the pin 18 against the screw 21. A coil spring 24 surrounding tie rod 16 is secured to the link 15 and tends Y normally to move the lower-end thereof toward the left as shown in Fig. 1. A shuttle feeler 25 is adjustably secured in a carrier 26which is secured to a stud 27 rotatable in a bearing 28. The carrier 26 has an arm 29 which is pivotally connected to a rod 30 the upper end of which is controlled by mechanism not shown herein but set forth in Patent No. 1,030,748. At the time of transfer the rod 30 is depressed to lower the shuttle feeler 25 so that it may beraised by the shuttle if the latter is not properly boxed.- Stop screw 31 is secured by link 15 to engage the frame .10'and limit movement of said link and support 13 under action of coil spring 4:11. ihe matter thus far described is of common construction and for a more complete description of the same reference may be had to the aforesaid patent and also to Patent No. 1,366,950.

My improvements relate to means or controlling the movement of the bobbin support 13. In carrying out my invention, 1 secure an unlocking lever l to the stud 2? (Fig. so that the lever a0 and the shuttle teeler 25 will move together. A retaining lever ll (Fig. is pivoted loosely on a fixed stud 42 (Fig. 2) and has a forwardly projecting arm 13 from which projects an ofi'set lug 4d. 'lhe link is provided with a. cam face which terminates in a recess 46 formed on said link 15. The lever ll (Fig. 5) has a depending arm A? on which is mounted a spring plunger l-S held normally in raised position by a spring 4:9.

The plunger etS has a loose sliding fit in its lower bearing a7 on the arm 47 and the upper end of the plunger is guided for swinging transverse movement in its slotted upper bearing M A flange a8 yieldingly engages the under side 01 the bearing 4:7 and normally holds the plunger in the position shown in Fig. 1.

The lever {10 which moves with the shut tle :t'eeler has a releasing point which is normally in contact with the under side of the arm 43 as shown in Fig. 1. Said lever 10 is also provided with a depressing -finger 51 which is normally in advance of the upwardly projecting end of the plunger 48. The lay 52 carries a box back 53 from the rear side or which extends a trip 54 positioned for engagement with the plunger 48 when the latter is depressed with the bobbin support 13 in bobbin retaining position.

Inoperation, the parts are normally in the position shown in Fig. 1, the lever 41 being positioned with its lug is in the recess 46 of the link 15, holding the support 13 in open position. The plunger a8 is normally in rearward raised position and clears the .trip 54 as the latter moves back and forth with the lay. At the time of transfer, the rod .is depressed to give the stud 27 a counterclockwise oscillation as shown in Fig. 1, the eli'cct of which is to move the unlocking lever 40 and cause the point 50 thereof to raise the arm 43. This action results in moving the lug let out of the recess lh, permitting the coil spring Qlto move the lower end of the link 15 to the left, earrying the support 13 to closed or bobbin retaining position. The position of the parts at this stage of the operation is as shown in Fig. 3, the plunger 48 being located in its forward position and above and out of the path of the trip 54:.

As the plunger L8 thus .moves forward, it may be engaged by the linger 51, but clears the finger by swinging yieldingly rearward in its slotted upper bearing 47, such swinging movement depressing the point of the plunger and causing it to slip under the finger,5l to the positionshown in .Fig. 3.

As the lay advances, the shuttle feeler will be raised either by engagement with a misplaced shuttle or with the box back 53, which action will move the depressing finger 51 downwardly to lower the plunger 48 to the position shown in Fig. l. As the lay thereafter moves backwardly, the trip 54 will engage the plunger 48 and rock the lever 41 back to the position shown in Fig. 1, returning the lug 4a to the recess 46 and moving the bobbin support 13 to .open or bobbin releasing position.

As the lever-a1 is being returned to normal or rearward position, the plunger d8 will be nioveddrom iunder. the finger 51 and the spring all) will move the plunger upward to normal position, where it will be out or the path of the trip 54.

lt is to :be understood that the trip 54 and plunger 48 can be made to contact witheach other at any desired point in the backward ,movenient of the lay, so that the release of the bobbin \V can be effected at any desired point. 1 lind that the bobbin can advantageously be .ieleasecl when the lay is about half way back.

From the foregoing, it will be seen that I have provided a bobbin releasing device in connection with a normally open or inoperative support, which operates only at the time of transfer and which releases a bobbin on the backward stroke of the lay at any desired point.

Having thus described my invention, it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from thespirit and scope of the invention and I donot wish to be limited to the details herein disclosed but what 1 claim is:

1. In a wettreplenishing mechanism for looms, a lay, a bobbin support normally in open position to permit a bobbin to pass thereby, means under control of the replenishing mechanism to move said supportto closed or bobbin retaining position, and means opeiatively connected to the support and located behind the lay when the latter is in its extreme forward position, i said means being engaged by the lay during the backward stroke of the lay to move said support to open or bobbin releasing position.

2. In a \veit replenishing mechanism, a

lay.a bobbin support normally inbobbinreleasing position, a retaining lever for said support to hold the rame'in bobbin releasing position, means controlled by the weft replenishing mechanism to move the retaining lever to releasing position, means to move said support to bobbin retaining position,

til

and means to reset the retaining lever and support to bobbin releasing position during the backward stroke of the lay. V

3. In a weft replenishing mechanism for looms, a lay, a bobbin support normally in bobbin releasing position and tending to move toward bobbin retaining position when released, a retaining lever holding said support in bobbin releasing position, means under control of the replenishing mechanism to move said retaining lever to a position to release said bobbin support, and means to return the retaining lever and support to normal bobbin releasing'position during the backward stroke of the lay.

4. In a weft replenishing mechanism for looms, a lay, a bobbin support normally in bobbin releasing position and tending when released to move toward bobbin holding position, a retaining lever to hold the support in bobbin releasing position, means under control of the replenishing mechanism to move the retaining lever'to release the bobbin support, and connections between the lay and the retaining lever established dur-,

ing backward movement of the lay to move said retainlng lever and bobbin support to bobbin releasing pos1t1on.

p 5. In a weft replenishing mechanism, a lay, a bobbin support normally in bobbin releasing position and tending normally to move to bobbin holding position when released,a retaining lever to hold said support in bobbin releasing position, means to move the retaining lever to a position to release the support, a plunger carried by said retaining lever, connections between said means to release the retaining lever and the plunger to depress the latter, and a trip carried by said lay to engage the plunger during the backward movement of the lay to move said retaining lever and support to bobbin releasing position. a

6. A mechanism as set forth in claim 5, in which the plunger has amovement to free itself from the retaining lever as the lever moves with the shuttle feeler to the operative position of the feeler, and in which the plunger is engaged and depressed by the retaining lever as said lever moves with the shuttle feeler to the inoperative position of said feeler.

In testimony whereof I have hereunto atfixed my s1gnature.

ALBERT A. GORDON. 

